| Autor: |
A.P. Machado, M.A. Otto, M.L. Bernardi, I. Wentz, F.P. Bortolozzo |
| Jazyk: |
English<br />Portuguese |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Vol 68, Iss 3, Pp 553-561 (2016) |
| Druh dokumentu: |
article |
| ISSN: |
1678-4162 |
| DOI: |
10.1590/1678-4162-8326 |
| Popis: |
ABSTRACT An adequate colostrum intake, in order to ensure the survival and weight gain of piglets, depends on the sow's ability to produce enough colostrum for the whole litter. The aim of this study was to evaluate factors involved in colostrum yield (CY) variability related to the sow, the litter and the farrowing process. The experiment was conducted with 96 Camborough 25(r) sows of parities one to seven, whose farrowing was spontaneous. Colostrum production of each sow was estimated by summing up the colostrum intake of each piglet in the litter, estimated by an equation that takes into account the birth weight and weight gain during the first 24h of life. The multiple regression model explained 28% of variation in CY, with 24% and 4% respectively of variation being explained by the litter birth weight and the width of the first mammary glands. Litter birth weight was positively correlated with the number of total born (r= 0.73) and born alive piglets (r= 0.83). When categorised into two groups of colostrum yield (LOWCY; ≤3.4kg; n= 46 vs HIGHCY; >3.4kg; n= 50), LOWCY sows had fewer total born and born alive piglets and lighter litters (P3 had greater odds (P≤0.05) of belonging to the LOWCY group than parity 3 sows. Sows with two or more obstetrical interventions had higher odds (P |
| Databáze: |
Directory of Open Access Journals |
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